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Table 3 Comparison of refractive outcomes of intraocular lens power calculation using the three devices in SRK/T formula

From: Accuracy of swept-source optical coherence tomography based biometry for intraocular lens power calculation: a retrospective cross–sectional study

 

Group A (n = 128)

Group B (n = 36)

SS–OCT biometer

PCI

A–scan US

SS–OCT biometer

A–scan US

Optimized constant

118.02

118.04

117.90

118.02

117.90

PE (D)

0.00 ± 0.44

0.00 ± 0.46

−0.02 ± 0.61

0.00 ± 0.47

−0.01 ± 0.66

MAE (D)

0.36 ± 0.27

0.39 ± 0.30

0.47 ± 0.39

0.36 ± 0.31

0.64 ± 0.36

pvalue

0.027*

p < .001

MedAE (D)

0.31

0.32

0.40

0.32

0.60

Eye within (%)

  ≤ ±0.25 D

41.44

42.97

36.72

47.22

22.22

  ≤ ±0.50 D

71.09

67.19

60.16

72.22

47.22

  ≤ ±1.00 D

95.31

95.31

90.63

94.44

83.33

  1. Values are presented as mean ± standard deviation
  2. Group A; PCI feasible, Group B; PCI unfeasible
  3. D diopters, PE prediction error, MAE mean absolute error, MedAE median absolute error, SS-OCT swept-source optical coherence tomography, PCI partial coherence interferometry, US ultrasonography
  4. *pvalue is for KruskalWallis test
  5. Same letters indicate no statistical significance based on Bonferroni’s method
  6. ††pvalue is for Wilcoxon signed rank test